Piston compressor shell side supporting jig

Abstract

The utility model discloses a piston compressor shell side supporting jig, a supporting assembly comprises a bottom plate and a supporting plate which is vertically arranged on the bottom plate and abuts against the plane end of a piston compressor shell, the supporting plate is provided with at least one pair of through holes matched with locking holes in the plane end of the piston compressor shell, and the through holes are matched with the locking holes in the plane end of the piston compressor shell. The locking assembly comprises a sleeve and an expansion column, the sleeve is provided with a middle cavity, a plurality of gaps penetrating through a body of the sleeve are formed in one side of the sleeve at equal intervals, an expansion area is formed on the sleeve, the sleeve is positioned in the through hole, at least the expansion area extends into the locking hole, and the expansion area is externally supported by the expansion column moving in the middle cavity to abut against the inner wall of the locking hole. The expansion area on the sleeve deforms and then abuts against the inner wall of the locking hole of the piston compressor shell in an interference mode through the external supporting effect of the expansion column on the sleeve, the piston compressor shell is tightly hung on the side wall of the supporting plate, the structure is simple, and stable side supporting and positioning can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of positioning tooling, in particular to a side supporting fixture for a piston compressor housing. Background Art

[0002] The piston compressor housing has a large volume. During the machining process, not only the side walls of the body need to be processed and formed, but also the inner cavity and / or the two end faces need to be processed. It is not suitable to position such processed parts by clamping them on both sides. The piston compressor housing needs to be positioned by fixing the side walls of the body to expose the two end faces.

[0003] In the prior art, if positioning and supporting is achieved by clamping the side walls of the piston compressor housing, on the one hand, a clamping mechanism with a large stroke and opposite movement is required to achieve clamping. In this method, the clamping mechanism will occupy a large space whether it is clamped in the vertical direction or in the horizontal direction, and will also make the overall structure more complicated. In addition, when the side walls of the piston compressor housing are asymmetrical and uneven, it is not conducive to stable clamping. Moreover, the clamping method is likely to damage the appearance of the piston compressor housing. Utility Model Content

[0004] The purpose of the utility model is to provide a side support fixture for a piston compressor housing, which utilizes the external support effect of the expansion column on the sleeve to deform the expansion area on the sleeve so that it is in interference fit with the inner wall of the locking hole of the piston compressor housing, and the piston compressor housing is hung and tightened on the side wall of the support plate. The structure is simple and stable side support positioning can be achieved.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a piston compressor housing side support fixture, comprising:

[0006] The support assembly comprises a bottom plate and a support plate vertically arranged on the bottom plate and abutting against the plane end of the piston compressor housing, wherein the support plate is provided with at least one pair of through holes matching the locking holes on the plane end of the piston compressor housing,

[0007] A locking assembly includes a sleeve and an expansion column. The sleeve has a central cavity and one side of the sleeve is provided with a plurality of gaps that penetrate the main body at equal intervals to form an expansion zone on the sleeve. The sleeve is positioned in the through hole and at least the expansion zone extends into the locking hole. The expansion zone is supported by the expansion column that moves in the central cavity and abuts against the inner wall of the locking hole.

[0008] As a further optimization, the expansion column includes a straight column and a conical column arranged at one end of the straight column. The conical column abuts against the inner wall of the sleeve on the side with the gap to support the expansion area. The thicker end of the conical column extends into the middle cavity to achieve the external support effect on the expansion area.

[0009] As a further optimization, the straight column is provided with an external thread, the sleeve is provided with an internal thread, the straight column is rotatably arranged in the middle cavity, and the stable and precise movement of the expansion column relative to the sleeve is achieved through the screw rotation action.

[0010] As a further optimization, the expansion column is provided with a socket to facilitate the insertion of a tool into the socket to drive the expansion column to rotate.

[0011] As a further optimization, a limiting member is provided on the sleeve, and the limiting member abuts against the support plate to prevent the sleeve from being separated from the through hole.

[0012] As a further optimization, a positioning groove is provided on the support plate, and the limiting member is embedded in the positioning groove.

[0013] As a further optimization, the limiting member is a limiting block, which is embedded in the positioning groove to prevent the sleeve from rotating when the expansion column rotates.

[0014] As a further optimization, a limiting groove is provided on the bottom plate, the lower end of the support plate is embedded in the limiting groove, and is locked by bolts passing through the bottom plate and extending into the lower end of the support plate, thereby achieving stable vertical fixation of the support plate.

[0015] As a further optimization, the support assembly also includes auxiliary support plates arranged on opposite sides of the support plate and fixedly connected to the support plate and the base plate, so as to improve the vertical accuracy and stability of the support plate body and the piston compressor housing after being tightened.

[0016] As a further optimization, the auxiliary support plate and / or the support plate are provided with a clearance processing hole to facilitate machining after the tool head passes through.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. On the basis of the support plate abutting against the plane end of the piston compressor housing, the expansion column is used to support the sleeve externally to deform the expansion area on the sleeve so that it is in interference fit with the inner wall of the locking hole of the piston compressor housing. The product is tightened through a simple structure to complete the side support positioning of the product;

[0019] 2. The support plate is installed after being extended into the bottom plate, and the auxiliary support plate is used to fix the support plate, thereby achieving the installation stability of the support plate and ensuring the stability of the side support of the piston compressor housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model.

[0021] Figure 2 This is a structural diagram of the support assembly of the utility model from another side perspective.

[0022] Figure 3 It is a structural diagram of the locking assembly of the utility model.

[0023] Figure 4 It is a structural diagram of the expansion column of the utility model.

[0024] Figure 5 A structural diagram of another embodiment of the sleeve of the utility model

[0025] Figure 6 It is an application schematic diagram of the utility model. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] like Figures 1 to 3 As shown, the piston compressor housing side support fixture includes a support assembly and a locking assembly 2, the support assembly includes a base plate 11, and a support plate 12 vertically arranged on the base plate 11 and abutting against the plane end of the piston compressor housing 100, the support plate 12 is provided with a pair of through holes 120 matching the locking holes on the plane end of the piston compressor housing 100, the locking assembly 2 includes a sleeve 21 and an expansion column 22, the sleeve 21 has a middle cavity 210, and one side thereof is provided with a plurality of gaps 211 penetrating its body at equal intervals to form an expansion area 2a on the sleeve 21, the sleeve 21 is positioned in the through hole 120, and at least the expansion area 2a extends into the locking hole on the plane end of the piston compressor housing 100, the expansion area 2a is supported by the expansion column 22 moving in the middle cavity 210 on the sleeve 21 and abuts against the inner wall of the locking hole, thereby fixing the piston compressor housing 100 on the sleeve 21, that is, being hung on the support plate 12.

[0028] When using the side support fixture of the utility model, firstly, the thinner end of the expansion column 22 is extended into the middle cavity 210 from the side with the gap 211 on the sleeve 21, and until the thicker end of the expansion column 22 abuts against the sleeve 21 and cannot be further extended, forming an assembled locking assembly, and the assembled locking assembly is extended into the through hole 120 from the A surface of the support plate 12, and the part with the expansion area 2a on the sleeve 21 extends out of the through hole 120 and protrudes from the B surface of the support plate 12, and the locking hole on the plane end of the piston compressor housing 100 is aligned with the through hole 120 so that the expansion area 2a on the sleeve 21 extends into the locking hole ( The diameter of the locking hole on the plane end of the piston compressor housing 100, the outer diameter of the expansion zone 2a, and the maximum diameter of the thicker end of the expansion column 22 are matched, and the plane end of the piston compressor housing is abutted against the B surface of the support plate 12, and then the expansion column 22 is moved to make the thicker end of the expansion column 22 continue to move into the middle cavity 210. The sleeve at the expansion zone 2a is supported by the external support and the gap 211 allows the deformation to occur. The expansion zone 2a abuts against the inner wall of the locking hole, so that the locking assembly 2 positioned on the support plate 12 can tighten the piston compressor housing 100. Figure 6 As shown, it is convenient to subsequently machine the side walls of part of the piston compressor housing 100 and the flat ends at both ends. When the piston compressor housing 100 after machining needs to be separated from the support plate 12, the thicker end of the expansion column 22 is moved to separate from the expansion area 2a, that is, to separate from the middle cavity 210 of the sleeve 21. The sleeve at the expansion area 2a can be reset after the external support effect disappears, or in the process of separating the piston compressor housing 100 from the support plate 12 (that is, the locking hole on the flat end of the piston compressor housing 100 is separated from the sleeve 21), the sleeve 21 at the expansion area 2a is pressed to reset, thereby finally completing the separation from the support plate 12.

[0029] The utility model stably installs the support plate 12 through the base plate 11, and ensures the installation accuracy and stability by abutting the support plate 12 against the flat end of the piston compressor housing 100, and utilizes the expansion column 22 to support the sleeve 21, so that the expansion area 2a on the sleeve 21 is deformed and fixed with the inner wall of the locking hole of the flat end of the piston compressor housing 100 by interference abutment, thereby hanging the piston compressor housing 100 on the support plate 12. On the basis of ensuring that the product can be positioned and fixed for side support, it has a simpler structure, is easy to install, and is also conducive to the subsequent machining of the product.

[0030] Combination Figure 4As shown, the expansion column 22 includes a straight column 221 and a tapered column 222 arranged at one end of the straight column 221, the tapered column 222 abuts against the inner wall of the sleeve 21 on the side having the gap 211 to support the expansion area 2a outward, the straight column 221 has an equal diameter, and the end of the tapered column 222 away from the straight column 221 is the thickest end, and the diameter at the thickest end is equal to the outer diameter of the sleeve 21 and matches the diameter of the locking hole, ensuring that the sleeve 21 and the expansion column 22 can be inserted into the locking hole without interference, and because the sleeve 21 has a certain wall thickness, the expansion area 2a can be expanded outward after the thickest end of the tapered column 222 is inserted into the middle cavity 210, thereby realizing the external support effect and abutting against the locking hole.

[0031] In order to facilitate the movement of the straight column 221 in the middle cavity 210, an external thread 22a can be set on the straight column 221, and an internal thread 21a can be set in the sleeve, and the stable and accurate movement of the straight column 221 in the middle cavity 210 can be achieved through the screw rotation action; and a light column 2201 can be formed at one end of the straight column 221 away from the tapered column 222, and a guide section 220 can be formed, which is conducive to the straight column 221 extending into the middle cavity 210.

[0032] When the expansion column 22 does not protrude from the middle cavity 210 even after completing the external supporting effect on the expansion area 2a, in order to facilitate the operation of the straight column 221 to rotate in the middle cavity 210, a socket 223 can be set on the end face of the straight column 221 away from the conical column 222, and a tool is inserted into the middle cavity 210 and embedded in the socket 223 to operate the expansion column 22 to rotate.

[0033] The sleeve 21 is provided with a stopper, such as a stopper ring 212, which abuts against the A surface of the support plate 12, so that the sleeve 21 and the support assembly 2 are positioned on the support plate 12, and because the stopper ring 212 abuts against the support plate 12, it can also better prevent the support assembly 2 from escaping from the through hole 120 from the B surface of the support plate 12. In addition, a positioning groove (not shown) can be provided on the support plate 12, and the stopper 212 is embedded in the positioning groove.

[0034] like Figure 5 As shown, in another embodiment of the utility model, the limiting member is a limiting block 212′, and the A surface of the support plate 12 has a positioning groove matching the limiting block 212′. The limiting block 212′ is embedded in the positioning groove to prevent the sleeve 21 from rotating, thereby preventing the sleeve 21 from rotating when the expansion column 22 is operated to rotate and affecting the screw rotation action of the two.

[0035] In addition, Figure 2As shown, a limiting groove 110 is provided on the base plate 11, and the lower end of the support plate 12 is embedded in the limiting groove 110 and is locked by a bolt that passes upward through the base plate 11 and extends into the lower end of the support plate 12. By setting the lower part of the support plate 12 in the limiting groove 110, the verticality of the support plate 12 relative to the base plate 11 can be guaranteed to a greater extent, the installation accuracy of the piston compressor housing 100 can be guaranteed, and it is beneficial to the positioning and positioning of the tool head in the subsequent machining process.

[0036] In order to ensure the verticality and installation stability of the support plate 12, the support assembly 2 also includes auxiliary support plates arranged on opposite sides of the support plate 12 and fixedly connected to the support plate 12 and the base plate 11, such as a pair of first auxiliary support plates 131 arranged at opposite ends of the B surface of the support plate 12, and a second auxiliary support plate 132 arranged at the middle position of the A surface of the support plate 12. This arrangement can ensure the stability of the support plate 12, that is, the stability of the piston compressor housing 100 suspended on the support plate 12 can be ensured.

[0037] In addition, clearance processing holes 130 can be set on a pair of first auxiliary support plates 131 to facilitate the tool head to machine the two end surfaces of the piston compressor housing 100, and clearance processing holes can also be set on the support plate 12 to facilitate the tool head to extend into the piston compressor housing 100 for machining.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A piston compressor housing side support fixture, characterized in that: include: The support assembly comprises a bottom plate and a support plate vertically arranged on the bottom plate and abutting against the plane end of the piston compressor housing, wherein the support plate is provided with at least one pair of through holes matching the locking holes on the plane end of the piston compressor housing, A locking assembly includes a sleeve and an expansion column. The sleeve has a central cavity and one side of the sleeve is provided with a plurality of gaps that penetrate the main body at equal intervals to form an expansion zone on the sleeve. The sleeve is positioned in the through hole and at least the expansion zone extends into the locking hole. The expansion zone is supported by the expansion column that moves in the central cavity and abuts against the inner wall of the locking hole.

2. The piston compressor housing side support fixture according to claim 1, characterized in that: The expansion column comprises a straight column and a tapered column arranged at one end of the straight column, and the tapered column abuts against the inner wall of the sleeve on the side with the gap to support the expansion area outwardly.

3. The piston compressor housing side support fixture according to claim 2, characterized in that: The straight column is provided with an external thread, the sleeve is provided with an internal thread, and the straight column is rotatably arranged in the middle cavity.

4. The piston compressor housing side support fixture according to any one of claims 1 to 3, characterized in that: The expansion column is provided with a plug hole.

5. The piston compressor housing side support fixture according to claim 1, characterized in that: The sleeve is provided with a limiting member, and the limiting member abuts against the supporting plate.

6. The piston compressor housing side support fixture according to claim 5, characterized in that: The support plate is provided with a positioning groove, and the limiting member is embedded in the positioning groove.

7. The piston compressor housing side support fixture according to claim 6, characterized in that: The limiting component is a limiting block.

8. The piston compressor housing side support fixture according to claim 1, characterized in that: The bottom plate is provided with a limiting groove, the lower end of the support plate is embedded in the limiting groove and is locked by a bolt that passes through the bottom plate and extends into the lower end of the support plate.

9. The piston compressor housing side support fixture according to claim 1, characterized in that: The support assembly also includes auxiliary support plates which are arranged on opposite sides of the support plate and fixedly connected to the support plate and the bottom plate.

10. The piston compressor housing side support fixture according to claim 9, characterized in that: The auxiliary support plate and / or the support plate are provided with clearance processing holes.

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